if that's the envision for the edge..
Inside the inner carton, take out the cardboard rectangle that sits on top of the plywood sheet. The plywood sheet is screwed to the bottom of the plotter with four screws, they each attach near the feet (which fit through holes in the plywood)... You should have a foam block to hold the pen block, and then bubble wrap and tape the lid closed. This goes back in to the carton, then the hold down rectangle cardboard thing goes in. Then seal up that carton and secure it in the outer carton with the foam corners... And then seal up the whole thing and drop kick it off the top of a building.